1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sergio039 [100]
3 years ago
8

5. Evolution by natural selection was first put forth by

Biology
1 answer:
user100 [1]3 years ago
8 0

Answer:

Charles Darwin and Alfred Russel wallace in the 19th century

so the answer is d

You might be interested in
The wall of the alveolus (air sac) in the lung is composed of which type of epithelium?
lesantik [10]
Psuedostratified columnar epithelium
5 0
3 years ago
Black eyes are dominant to orange eyes, and green skin is dominant to white skin. Sam, a MendAlien with black eyes and green ski
Anna [14]
<h2>The correct answer is explained below:</h2>

Explanation:

  • According to the given question,
  • For eye color, let the black color be represented by B allele and orange color be represented by b allele. Black is dominant over orange.
  • For skin color, let the green skin be represented by G allele and white skin be represented by g allele. Green is dominant over white.
  • The phenotype of Sam is black eyes and green skin so his genotype can be BBGG or BbGg. It is also said that one of his parents has phenotype orange eyes and white skin. That parent's genotype must be bbgg.
  • Hence, the genotype of Sam must be BbGg.
  • Carole has the phenotype of orange eyes and white skin. Her genotype would bbgg.
  • The gametes produced by Sam are: BG, Bg, bG, bg.
  • The gametes produced by Carole are: bg.
  • Mating them we get,

           BG                    Bg                   bG                       bg

bg      BbGg               Bbgg               bbGg                   bbgg

  (Black/ Green) (Black/ White) (Orange/Green)  (Orange/ White)

  • The genotypes and phenotypes (Eye color/ Skin color) obtained are represented above.
  • The phenotypes (Eye color/ Skin color) obtained are in the following ratio:

(Black/ Green) : (Black/ White) : (Orange/Green) : (Orange/ White) = 1 : 1 : 1 : 1

5 0
2 years ago
An atom with 2 protons 1 neutron, and 2 electrons into a cation
Brums [2.3K]

Answer:

Atoms are made up of particles called protons, neutrons, and electrons, which are ... Within the main group elements ( Groups 1-2, 13-18), there are some general ... (via loss of electrons), the ion is positively charged and is called a cation.

Explanation:

3 0
2 years ago
An ecosystem has many levels of organization. Which level will have the most individuals?
atroni [7]

Answer:

Community

Explanation:

A community is all the biotic factors of an ecosystem. There are many populations of different species within an area. These populations in one area is a community. A community and its abiotic features is a ecosystem. Therefore, communities have the most individuals in an ecosystem.

3 0
3 years ago
What type of variation is necessary for natural selection to occur
Rzqust [24]
Genetic Variation
Natural selection results in organisms that are better suited to their environment are able to pass on genes to create strong offspring
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following processes releases energy to be used by a cell?
    8·2 answers
  • Which macromolecule holds your master set of instructions that control both the day-to-day operations and the reproduction of ce
    10·1 answer
  • In which phase transition do molecules directly move from a state involving vibration of particles in a fixed position to a stat
    13·2 answers
  • Explain what happens to tissues, such as the heart, or the brain, if oxygenated blood is not delivered in a timely manner.
    5·1 answer
  • What is the thing in the back of your throat called
    6·1 answer
  • Where does mesopelagic gets it energy and nutrients from?
    14·1 answer
  • What is photosynthesis​
    9·2 answers
  • Which statement BEST describes the relationship between MPF and the cell cycle?
    14·1 answer
  • ../3
    15·1 answer
  • The nucleus of each human cell contains ________, which are threadlike structures made up of deoxyribonucleic acid (dna).
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!